MLB NRFI & YRFI Predictions, Picks — Monday, May 19

MLB NRFI & YRFI Predictions, Picks — Monday, May 19 article feature image
Credit:

Mitch Keller (Imagn Images)

We've got a decently sized 12-game slate on Monday.

I found three picks, though one is only available in a smaller book, and another is likely to be postponed.

Let's dive into my MLB NRFI and YRFI picks and model predictions.

Quickslip

MLB NRFI, YRFI Picks — May 19, 2025

Reds vs. Pirates NRFI/YRFI Prediction

Reds Logo
Monday, May 19
6:40 p.m. ET
MLB.TV
Pirates homeslug= Logo
YRFI +110 (Play to +105)
BetRivers Logo

Starting Pitchers: Mitch Keller vs. Nick Lodolo

The most significant factor in this pick is BetRivers' (and other Kambi books') off-market line of +110, with the rest of the market at even money or worse.

I have this projected close to 50/50, so we need that plus money to make the bet worthwhile.

Both pitchers have first-time through the order xFIPs in the mid-fours, but both lineups have below-average platoon splits against the side they're facing.

If you don't have access to any books with the +110 line, I'm also showing slight value on the Reds team YRFI at +230,

Mariners vs. White Sox NRFI/YRFI Prediction

Mariners Logo
Monday, May 19
7:40 p.m. ET
MLB.TV
White Sox homeslug= Logo
YRFI +104 (Play to +100)
BFanDuel Logo

Starting Pitchers: Luis Castillo vs. Davis Martin

The Mariners are a top-five offense (both overall and against righties) when using park-adjusted factors, but they happen to play their home games at the best pitcher's park in baseball, which suppresses their numbers.

They travel to Rate Field in Chicago on Monday, which has a slightly pitcher-friendly Park Factor but is nowhere near their home ballpark. The difference between the two stadiums is about 13% in favor of hitters.

The weather also favors the bats, another point for the offenses.

Seattle is taking on Davis Martin, who has a 4.62 xFIP his first time through the order as a starter, and underlying numbers much worse than his 3.65 ERA.

The same logic about Seattle bats can be applied reverse to their pitchers. Luis Castillo has a 2.65 ERA at home and a 5.87 ERA on the road this season, enough to take the full-game YRFI instead of the Mariners team.

Guardians vs. Twins NRFI/YRFI Prediction

Guardians Logo
Monday, May 19
7:40 p.m. ET
MLB.TV
Twins homeslug= Logo
NRFI -125 (Play to -130)
Caesars Logo

Starting Pitchers: Logan Allen vs. Bailey Ober

The overwhelmingly likely outcome is that this game doesn't play, but if it does, the weather will give pitchers an extreme boost.

On top of that, Logan Allen's first-time-through-the-order ERA is 1.50, and Bailey Ober's is a solid 3.79.

Minnesota is on the wrong side of their platoon splits against Allen and without their best bat (Byron Buxton) at the top of the lineup, so there's minimal risk.

The Guardians are slightly more likely to score, but it's not a significant concern given the conditions.

I'm taking this one on the off chance they start this game before the worst of the weather hits, possibly with the start moved up. It's not super likely, but it's worth a shot.

About the Author
Billy Ward has been passionate about fantasy sports since the 1990s and pursued a career as an MMA fighter, turning pro at 21 before returning to college to finish his degree. He has notable achievements in fantasy sports and DFS, including qualifying for the DraftKings UFC DFS world championship and five-figure wins in NFL DFS and best ball. Now a member of the Action Network’s predictive analytics team, Billy specializes in NFL, MLB, and combat sports, managing DFS player projection models and contributing to podcasts and live betting shows.

Follow Billy Ward @Psychoward586 on Twitter/X.

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